Hi,
We are evaluation TFS 2013 and I have noticed that any changes made outside Visual Studio IDE is not recognized and the file is not marked as checked out in TFS Source Control Explorer. Below are my setting in VS. This is a big show stopper as the developer will not be aware that he need to check in the updates. and Files will not move to TFS source control. Any advice is highly appreciated to resolve this.
Under Tools -> Environment->Documents, the "Detect when the file is changed outside the environment" is checked. Also the "Auto load changes if saved is unchecked.